Hanger unit



BENJAMIN GOLD, OF HOBART, INDIANA.

HANGER UNIT.

Specification of Letters Patent. Patented Sept. 16, 1919,

Application filed June 9, 1919. Serial No. 302,782.

To all whom it may Concern:

Be it known that I, BENJAMIN GOLD, a

citizen of the United States, residing atv Hobart, in the county of Lake and State of -Indiana, have invented a new and useful Improvement in Hanger Units, of which the following is a specification.

My invention relates to hanger units for use in repairing the roofs of furnaces, as for example open-hearth furnaces, it having been devised for use, more particularly, though not exclusively, in carrying out my improved method forming the subject of my pending application for S. Patent, Serial No. 289,338, filed April 11, 1919.

As a preface to the following description of my improved device, and as explanatory of the general conditions which give rise to its use, it may be said that the heat to which the roofs, especially open-hearth furnace roofs, are subjected, sooner or later burns out portions of the roof structure, requiring the repairing thereof. Sometimes the burned out portion extends entirely through the upper surface of the roof, and sometimes short thereof, and in the repairing operation the impaired portion of the roof is cut out and back to a point where the roof is thickest. Centering is then placed adjacent to the opening to be filled and the repairing material as, for example, refractory bricks, are filled into the opening upon the centering, it being understood that such repairs are made as soon as possible after the furnace has ceased to be fired, my improved device being used in connection with the supporting of the centering.

My primary object is to provide a novel, simple and inexpensive construction of hanger unit for use in the repairing of furnace roofs, and more particularly, though not exclusively, in the repairing of roofs in accordance with my improved method hereinbefore referred to.

Referring to the accompanying drawings Figure 1 is a cross-sectional view of a furnace structure illustrating it in the process of being repaired in accordance with the method hereinbefore referred to and em ploying my improved hanger units for supporting the centering, this view being taken at the line 1 1 on Fig. 2 and viewed in the direction of the arrows; and Fig. 2, an enlarged section taken at the line 2-2 on Fig. l and viewed in the direction of the arrows.

Referring to the drawings, a furnace, the roof of which is to be repaired, is represented at 8, .the roof being indicated at i and shown of arched form transversely of the furnace structure. The ,dotted line 5 represents, by way of example, the inside of the roof where it is partly burned out and is to be repaired, theroof at this point in accordance with lcommon practice, being removed to provide the rectangular shaped opening 6 forming the void yto be filled for effecting the repair. This being done,y the operator positions in opening 6and preferably in spaced relation, hanger units 7 which are supported from the roof 4 at opposite sides of the opening 6, as by resting upon the upper surface of the roofvand present a support for a plate 8 or plates, by preference of metal which form a centering and extends to a point adjacent the underside of the roof 4:. The centering thus provided forms a support upon which the bricks, or other material, for filling the opening 6 are placed. The hanger units 7 are each formed of a pair of side bars 9 provided at their upper ends with outwardly extending flanges 10, and with a cross-member 11 at its lower end, the parts of the hanger unit being formed integrally, as shown in the drawing, these units being preferably constructed of metal.

In the use of the hanger units for repair'- ing a roof, the units are introduced into the opening 6 from the top of the roof 4 to a position in which these units rest at their flanges 10, upon the portions of the roof surrounding the opening 6, as illustrated. The workman then lays across the crossmembers 11, to form the centering hereinbefore referred to, the plate 8, or plates, and the repairing material then filled into the opening 6, as hereinbefore stated. In the use of this form of device the hanger units would remain in the roof until burned away.

It will be understood that in using hanger units as described, the workmen in repairing the roof are stationed at all times exteriorly of the furnace chamber and the centering serves as a shield to protect the workmen against the heat of the furnace; furthermore the repair of the furnace may be effected more expeditiously and while the furnace is relatively hot, especially because of the fact that the hanger units may be quickly applied to operative position in the opening to be filled with the repair mateterial lled into Itheopening 6 to be gradually heated, when the `furnace is retired, with the result of preventing spawling of .the material and by the time the centering Yhas dropped away `from the position shown 1n the drawings, the repair Vmaterial hasbecome heated to such adegree -that Vfspawling' will Ynot thereafter take place.

Another desired result which 4may be ac- Y complished bv using my hanger units, in

the manner shown inthe drawings.; ',namely by supporting the units at the .Hanges l0, upon the alppersurface of thereof t, is that these units are caused to take positionssub- .stantiallyconforming to the `curvature of the supper surfaceofthe arched roof, the

centering thereby also becoming arched, as shown in Fig. l whereby the repair material, when in Vbrick form, will substantially con` form at its upper and lower surfaces With the arc-shaped top and bottom surfaces of the roof and thus produce a neaterjo'b.

lVhat I claim as new and desire to secure by 4Letters Patent is:

A hanger unit for use in repairing the roofs of furnaces adapted to be positioned in the opening to be frepaired, comprising .an integral -Ufshaped member having side bars of a length substantially equal Vto the thicknessof the roof-to be repaired'and connected With a eross member at ltheir'loWer ends, the upper A.ends `of Vsaid side members portion of thefopening inthe roof, whereby said hanger forms a support Ifor the repair material.

BENJAMIN GOLD.

Copies of this patent may be ,obtainedor five scents eachyby addressing the tfommsszioner zof Patents.

- Washington, .1). E." 

